Regardless of RV brand, the awning, fridge, fresh water pump, and dash and roof AC units may be ready to die. Our roof AC and fridge, house batteries and converter/charger etc needed replacement at around 10 years old. Tires if over 5 years old may be unsafe and need replacement per date code, disregard appearance. If you boondock, a built in 4000 watt generator is needed occasionally to power the roof AC and microwave, charge batteries, etc. The condition of the engine cooling system, brakes, transmission, suspension etc., plus "housebox" needs should also be taken into account when deciding to buy any used rig.